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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">//</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#ifndef BOOST_GIL_PIXEL_ITERATOR_HPP</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#define BOOST_GIL_PIXEL_ITERATOR_HPP</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &lt;boost/gil/concepts.hpp&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &lt;boost/gil/dynamic_step.hpp&gt;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &lt;boost/gil/utilities.hpp&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &lt;boost/gil/pixel.hpp&gt;</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include &lt;iterator&gt;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">//forwarded declaration (as this file is included in step_iterator.hpp)</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="keyword">class </span>memory_based_step_iterator;</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt;</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1is__iterator__adaptor.html"> 28</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1is__iterator__adaptor.html">is_iterator_adaptor</a> : <span class="keyword">public</span> std::false_type {};</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt;</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1iterator__adaptor__get__base.html">iterator_adaptor_get_base</a>;</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> It, <span class="keyword">typename</span> NewBaseIt&gt;</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1iterator__adaptor__rebind.html"> 36</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1iterator__adaptor__rebind.html">iterator_adaptor_rebind</a>;</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt;</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1const__iterator__type.html"> 40</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1const__iterator__type.html">const_iterator_type</a>;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="comment">// The default implementation when the iterator is a C pointer is to use the standard constness semantics</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1const__iterator__type.html">const_iterator_type</a>&lt;T*&gt; { <span class="keyword">using </span>type = T <span class="keyword">const</span>*; };</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1const__iterator__type.html">const_iterator_type</a>&lt;T const*&gt; { <span class="keyword">using </span>type = T <span class="keyword">const</span>*; };</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1iterator__is__mutable.html"> 49</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1iterator__is__mutable.html">iterator_is_mutable</a>{};</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="comment">// The default implementation when the iterator is a C pointer is to use the standard constness semantics</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1iterator__is__mutable.html">iterator_is_mutable</a>&lt;T*&gt; : std::true_type {};</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> </div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="keyword">struct </span>iterator_is_mutable&lt;T const*&gt; : std::false_type {};</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="comment">// HasDynamicXStepTypeConcept</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="keyword">struct </span>dynamic_x_step_type&lt;Pixel*&gt; {</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">using </span>type = memory_based_step_iterator&lt;Pixel *&gt;;</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span>};</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="keyword">struct </span>dynamic_x_step_type&lt;const Pixel*&gt; {</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keyword">using </span>type = memory_based_step_iterator&lt;const Pixel *&gt;;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span>};</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="comment">// PixelBasedConcept</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="keyword">struct </span>color_space_type&lt;Pixel*&gt; : color_space_type&lt;Pixel&gt; {};</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><span class="keyword">struct </span>color_space_type&lt;Pixel const*&gt; : color_space_type&lt;Pixel&gt; {};</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span><span class="keyword">struct </span>channel_mapping_type&lt;Pixel*&gt; : channel_mapping_type&lt;Pixel&gt; {};</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span><span class="keyword">struct </span>channel_mapping_type&lt;Pixel const*&gt; : channel_mapping_type&lt;Pixel&gt; {};</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span><span class="keyword">struct </span>is_planar&lt;Pixel*&gt; : is_planar&lt;Pixel&gt; {};</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span><span class="keyword">struct </span>is_planar&lt;Pixel const*&gt; : is_planar&lt;Pixel&gt; {};</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span><span class="comment">// HomogeneousPixelBasedConcept</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span><span class="keyword">struct </span>channel_type&lt;Pixel*&gt; : channel_type&lt;Pixel&gt; {};</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span><span class="keyword">struct </span>channel_type&lt;Pixel const*&gt; : channel_type&lt;Pixel&gt; {};</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> </div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span><span class="comment">// MemoryBasedIteratorConcept</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1byte__to__memunit.html"> 124</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1byte__to__memunit.html">byte_to_memunit</a> : std::integral_constant&lt;int, 1&gt; {};</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> </div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span><span class="keyword">inline</span> std::ptrdiff_t memunit_step(P <span class="keyword">const</span>*) { <span class="keywordflow">return</span> <span class="keyword">sizeof</span>(P); }</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> </div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span><span class="keyword">inline</span> std::ptrdiff_t memunit_distance(P <span class="keyword">const</span>* p1, P <span class="keyword">const</span>* p2)</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span>{</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">return</span> (</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> gil_reinterpret_cast_c&lt;unsigned char const*&gt;(p2) -</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> gil_reinterpret_cast_c&lt;unsigned char const*&gt;(p1));</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span>}</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span><span class="keyword">inline</span> <span class="keywordtype">void</span> memunit_advance(P* &amp;p, std::ptrdiff_t diff)</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span>{</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> p = (P*)((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)(p)+diff);</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span>}</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span><span class="keyword">inline</span> P* memunit_advanced(<span class="keyword">const</span> P* p, std::ptrdiff_t diff)</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span>{</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="keywordflow">return</span> (P*)((<span class="keywordtype">char</span>*)(p)+diff);</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span>}</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> </div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span><span class="comment">// memunit_advanced_ref</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span><span class="comment">// (shortcut to advancing a pointer by a given number of memunits and taking the reference in case the compiler is not smart enough)</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt;</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span><span class="keyword">inline</span> P&amp; memunit_advanced_ref(P* p, std::ptrdiff_t diff) {</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keywordflow">return</span> *memunit_advanced(p,diff);</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span>}</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> </div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span>} } <span class="comment">// namespace boost::gil</span></div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="anamespaceboost_html"><div class="ttname"><a href="namespaceboost.html">boost</a></div><div class="ttdoc">defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)</div><div class="ttdef"><b>Definition</b> algorithm.hpp:36</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1byte__to__memunit_html"><div class="ttname"><a href="structboost_1_1gil_1_1byte__to__memunit.html">boost::gil::byte_to_memunit</a></div><div class="ttdef"><b>Definition</b> pixel_iterator.hpp:124</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1const__iterator__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1const__iterator__type.html">boost::gil::const_iterator_type</a></div><div class="ttdoc">Returns the type of an iterator just like the input iterator, except operating over immutable values.</div><div class="ttdef"><b>Definition</b> pixel_iterator.hpp:40</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1is__iterator__adaptor_html"><div class="ttname"><a href="structboost_1_1gil_1_1is__iterator__adaptor.html">boost::gil::is_iterator_adaptor</a></div><div class="ttdoc">metafunction predicate determining whether the given iterator is a plain one or an adaptor over anoth...</div><div class="ttdef"><b>Definition</b> pixel_iterator.hpp:28</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1iterator__adaptor__get__base_html"><div class="ttname"><a href="structboost_1_1gil_1_1iterator__adaptor__get__base.html">boost::gil::iterator_adaptor_get_base</a></div><div class="ttdoc">returns the base iterator for a given iterator adaptor. Provide an specialization when introducing ne...</div><div class="ttdef"><b>Definition</b> metafunctions.hpp:36</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1iterator__adaptor__rebind_html"><div class="ttname"><a href="structboost_1_1gil_1_1iterator__adaptor__rebind.html">boost::gil::iterator_adaptor_rebind</a></div><div class="ttdoc">Changes the base iterator of an iterator adaptor. Provide an specialization when introducing new iter...</div><div class="ttdef"><b>Definition</b> pixel_iterator.hpp:36</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1iterator__is__mutable_html"><div class="ttname"><a href="structboost_1_1gil_1_1iterator__is__mutable.html">boost::gil::iterator_is_mutable</a></div><div class="ttdoc">Metafunction predicate returning whether the given iterator allows for changing its values.</div><div class="ttdef"><b>Definition</b> pixel_iterator.hpp:49</div></div>
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